improving the performance

my application loads up real slow, especially on slow computers. I was wondering what are the factors (from coding aspects) that will slow down the performance of the application, ie using too many try and catch blocks slows down the performance, or using delegates slows it down..etc..

or do all .Net applications really starts up slow?

Using the ngen.exe tool might improve startup times somewhat. Also check out my reply in a thread called "Program starts very slow on NT4".

so the performance is not due to the any factors from the coding aspect?

and btw, where do i get the ngen.exe tool? i have not heard of it

ngen.exe is part of the SDK. On my box its I:\WINNT\Microsoft.NET\Framework\v1.0.3705\ngen.exe. Check the documentation for more information on usage.
I also suggest you use a profiler to determine if there are any bottlenecks in your code. Compuware has a free one that plugs into VS.NET: http://www.compuware.com/products/devpartner/profiler/